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56006637 = 3531632161
BaseRepresentation
bin1101010110100…
…1011111101101
310220101102122220
43111221133231
5103314203022
65320225553
71250022441
oct325513755
9126342586
1056006637
1129683685
121690b2b9
13b7ac42b
14761c821
154db485c
hex35697ed

56006637 has 16 divisors (see below), whose sum is σ = 76586688. Its totient is φ = 36391680.

The previous prime is 56006611. The next prime is 56006651. The reversal of 56006637 is 73660065.

It is not a de Polignac number, because 56006637 - 210 = 56005613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56006598 and 56006607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56005637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24837 + ... + 26997.

It is an arithmetic number, because the mean of its divisors is an integer number (4786668).

Almost surely, 256006637 is an apocalyptic number.

It is an amenable number.

56006637 is a deficient number, since it is larger than the sum of its proper divisors (20580051).

56006637 is a wasteful number, since it uses less digits than its factorization.

56006637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 56006637 is about 7483.7582136250. The cubic root of 56006637 is about 382.6013503910.

The spelling of 56006637 in words is "fifty-six million, six thousand, six hundred thirty-seven".

Divisors: 1 3 53 159 163 489 2161 6483 8639 25917 114533 343599 352243 1056729 18668879 56006637